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        <div class="jumbotron">
            <h1>我的第一个Bootstrap页面</h1>
            <p>重置窗口大小，查看响应式效果！</p>
        </div>
       <div class="row">
            <div class="col-md-3 col-sm-6 col-xs-12">
                <h3>第一列</h3>
                <p>学的不仅是技术，更是梦想!</p >
                <p>再牛逼的梦想,也抵不住你的坚持!</p >
            </div>
            <div class="col-md-3 col-sm-6 col-xs-12">
                <h3>第二列</h3>
                <p>学的不仅是技术，更是梦想!</p >
                <p>再牛逼的梦想,也抵不住你傻逼似的坚持!</p >
            </div>
            <div class="col-md-3 col-sm-6 col-xs-12">
                <h3>第三列</h3>
                <p>学的不仅是技术，更是梦想!</p >
                <p>再牛逼的梦想,也抵不住你傻逼似的坚持!</p >
            </div>
            <div class="col-md-3 col-sm-6 col-xs-12">
                <h3>第四列</h3>
                <p>学的不仅是技术，更是梦想!</p >
                <p>再牛逼的梦想,也抵不住你傻逼似的坚持!</p >
            </div>
       </div>
    </div>
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